[Beowulf] Re: Ahoy shipmates

Robert G. Brown rgb at phy.duke.edu
Tue Oct 13 13:40:22 EDT 2009


On Tue, 13 Oct 2009, Hearns, John wrote:

> To use seawater to cool a room safely it would have to be well isolated,
> exchanging heat with a loop of much more innocuous fluid that actually
> enters the room.

Check out the Duke Marine Lab website.  They basically do this, via
geothermal exchange units (but they're on an island -- the ocean is
basically the ultimate heat sink).

I think that the technology is straightforward and readily available
these days.  The only real hassle is that ocean water is corrosive as
hell, so the heat exchangers have to be stainless steel and/or barnacle
proof unless you bury the exchangers and rely on slow diffusive
convection back to the ocean.

     rgb

>
> Dave, I really think that is how you would do it. I was a bit loose in
> terminology.
> You don't pump the raw cooling water from your private bit of sea (or,
> ahem, lake) round
> your computer room.
>
>
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Robert G. Brown	                       http://www.phy.duke.edu/~rgb/
Duke University Dept. of Physics, Box 90305
Durham, N.C. 27708-0305
Phone: 1-919-660-2567  Fax: 919-660-2525     email:rgb at phy.duke.edu


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